Dear tourists: all this is, is a snack stand. Nothing more. Forget about any write-ups you may have…read moreread that glorify this place or somehow pen this as the #1 place for frites. It's literally just a snack stand, or as they might say in Chicago, a greasy spoon.
I came in early afternoon on a Monday and it was near empty. Socially awkward people will be happy to know there are ordering kiosks with several language options, so you won't have to "uhh" your way through an order.
The Flemish beef stew is something I figured I had to get before leaving. The combo (menu) comes with fries, a drink, and a condiment of your choosing. Sure, it's fine. But nothing special about it. Keep expectations low, and you'll be just fine.